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Studies of Tie Electronic Structure By XPS f HTSC and Related Compounds

Published online by Cambridge University Press:  28 February 2011

S. Myhrai ,
A.E. Bocquet ,
J.F. Dobsoni ,
P. Goodman ,
P.C. Healy ,
A.M. Stewart ,
J.G. Thompson  and
T.J. Vhite
S. Myhrai
Affiliation:
Div. Sei.and Tech., Griffith university, Q. 4111, Australia.
A.E. Bocquet
Affiliation:
Div. Sei.and Tech., Griffith university, Q. 4111, Australia.
J.F. Dobsoni
Affiliation:
Div. Sei.and Tech., Griffith university, Q. 4111, Australia.
P. Goodman
Affiliation:
Sch. of Physics, Melbourne University, V. 3052, Australia
P.C. Healy
Affiliation:
Div. Sei.and Tech., Griffith university, Q. 4111, Australia.
A.M. Stewart
Affiliation:
Res. Sch. of Physical Sciences, ANU, ACT, 2601, Australia.
J.G. Thompson
Affiliation:
Res. Sch. of Chemistry, ANU, ACT, 2601, Australia.
T.J. Vhite
Affiliation:
Electron Microscope Centre, Queensland University, Q.4067, Australia.
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Abstract

Measurements by photoemission spectroscopy have shown that the chemical environments of alkaline earth cations in HTSC compounds are different from the environments of these ions in the prototype perovskite structures. A recently discovered HTSC compound (Pb2Sr2Ca0.5Y0.5Cu3O8) exhibits the exceptional feature of having a typical HTSC signature for Sr, while Ca shows a perovskite-like signature. The crystal-chemical features of the relevant compounds have been correlated with these observations. These correlations may be indicative of inter-layer electronic interactions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 999
Copyright
Copyright © Materials Research Society 1990

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